It is important to know the nuances of the insurance companies you are contracted with. Some will accept either modifier 50 or RT/LT, but there are some that prefer RT/LT over -50 and vice versa.
CMS contractors require, one unit billed with a 50 modifier on claims received after August 16, 2019. Stating the anatomical modifier shows the additional services are not duplicates and will be denied if billed with RT and LT. With
For other procedures look at the Bilateral Surgery Indicator assigned to the code, to see how it should be reported.
Bilateral Surgery Indicators
“0" indicates a unilateral code; Modifier 50 is not billable.
"1" indicates modifier 50 can be appropriate.
"2" indicates a bilateral code; modifier 50 is not billable.
"3" indicates primary radiology codes; modifier 50 is billable.
"9" indicates that the concept does not apply. (office visit)